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US 10,330,777 B2Granted
Holographic waveguide lidar
AssigneeDigiLens Inc.
InventorsMilan Momcilo Popovich, Jonathan David Waldern, Alastair John Grant
Life of this patent
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Abstract
A holographic waveguide LIDAR having a transmitter waveguide coupled to a beam deflector and a receiver waveguide coupled to a detector module. The transmitter waveguide contains an array of grating elements for diffracting a scanned laser beam into a predefined angular ranges. The receiver waveguide contains an array of grating elements for diffracting light reflected from external points within a predefined angular range towards the detector module.
Claims20
A waveguide sensor, comprising:
- a source of first wavelength light;
- at least one beam deflector for scanning said light;
- a transmitter waveguide, said transmitter waveguide containing a multiplicity of grating elements disposed in at least one grating layer, each said element operative to diffract light into a predefined range of output directions;
- a receiver waveguide;
- and
- a detector optically coupled to said receiver waveguide,
- wherein the beam deflector is optically coupled to said transmitter waveguide and configured such that scanned light coupled into said transmitter waveguide executes angular sweeps about the predefined range of output directions of said grating elements, and
- wherein the receiver waveguide contains a multiplicity of grating elements disposed in at least one grating layer, each said element diffracting light reflected from external points and incident within a predefined angular range into a total internal reflection (TIR) path to said detector.
5 more elements
Dependencies are inferred from the claim text.